Since the first edition of was written, the personal computer has replaced the typewriter.
This has had an impact on not only formatting, layout and editing but also the method of communicating written information itself.
There are many reasons for writing business letters.
Maybe this is useful if you are just looking to go out and have fun, but it certainly is not so great if the woman on the receiving end is taking you seriously.
Maybe she is taking you seriously because you sound serious.
If you are using stationery, it may already be printed on the letterhead; if so, do not type it out.
If the address is not on the letterhead, include it at the top of the document.